Z-1 machine. Electric arcs fly over the Z-1accel- erator, the world's most powerfullaboratory X-ray source, which is used in fusion &nuclear weapons research. For a billionth of asecond, the Z-1 fires electrical energy equivalentto 60 times the output of the world's powerstations at a hohlraum target made of smallcages of metal wires that are the width of a humanhair. Electricity flowing in these wires creates amassive magnetic field. The wires vaporise &accelerate towards a central point. The magneticfield collapses, creating tem- peratures of 1.7million degrees celsius & braking chargedparticles so that they produce X-rays.